[tip:perf/core] perf symbols: Introduce map__is_(kernel,kmodule)( )

[tip-bot for Arnaldo Carvalho de Melo]

Commit-ID:  e6ce712634ea038ce42bbb11932b692696756882
Gitweb:     http://git.kernel.org/tip/e6ce712634ea038ce42bbb11932b692696756882
Author:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Thu, 23 Jul 2015 11:06:16 -0300
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 23 Jul 2015 11:28:36 -0300

perf symbols: Introduce map__is_(kernel,kmodule)()

To, with members we already have, check if a kernel level map is for the
kernel proper or for a module.

Acked-by: David Ahern <dsahern@xxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-m5ic7h0z2crmtj7vi1a1rj3b@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/map.c | 14 ++++++++++++++
 tools/perf/util/map.h |  7 +++++++
 2 files changed, 21 insertions(+)

diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index b5a5e9c..ce37e95 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -224,6 +224,20 @@ struct map *map__new2(u64 start, struct dso *dso, enum map_type type)
 	return map;
 }
 
+/*
+ * Use this and __map__is_kmodule() for map instances that are in
+ * machine->kmaps, and thus have map->groups->machine all properly set, to
+ * disambiguate between the kernel and modules.
+ *
+ * When the need arises, introduce map__is_{kernel,kmodule)() that
+ * checks (map->groups != NULL && map->groups->machine != NULL &&
+ * map->dso->kernel) before calling __map__is_{kernel,kmodule}())
+ */
+bool __map__is_kernel(const struct map *map)
+{
+	return map->groups->machine->vmlinux_maps[map->type] == map;
+}
+
 static void map__exit(struct map *map)
 {
 	BUG_ON(!RB_EMPTY_NODE(&map->rb_node));
diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
index d73e687..57829e8 100644
--- a/tools/perf/util/map.h
+++ b/tools/perf/util/map.h
@@ -256,4 +256,11 @@ int map_groups__fixup_overlappings(struct map_groups *mg, struct map *map,
 struct map *map_groups__find_by_name(struct map_groups *mg,
 				     enum map_type type, const char *name);
 
+bool __map__is_kernel(const struct map *map);
+
+static inline bool __map__is_kmodule(const struct map *map)
+{
+	return !__map__is_kernel(map);
+}
+
 #endif /* __PERF_MAP_H */
--
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